---
product_id: 475575858
title: "Uni Filter BF-2 12\" X 24\" X 3/8\" 30-PPI Black Coarse Foam"
brand: "4into1"
price: "$100.23"
currency: USD
in_stock: true
reviews_count: 5
category: "4into1"
url: https://www.desertcart.us/products/475575858-uni-filter-bf-2-12-x-24-x-3-8
store_origin: US
region: United States of America
---

# Customizable 12" x 24" sheet size 30 PPI coarse foam for max dirt capture Proudly made in the USA Uni Filter BF-2 12" X 24" X 3/8" 30-PPI Black Coarse Foam

**Brand:** 4into1
**Price:** $100.23
**Availability:** ✅ In Stock

## Summary

> 🛠️ Upgrade your ride’s breathability with foam that means business!

## Quick Answers

- **What is this?** Uni Filter BF-2 12" X 24" X 3/8" 30-PPI Black Coarse Foam by 4into1
- **How much does it cost?** $100.23 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/475575858-uni-filter-bf-2-12-x-24-x-3-8)

## Best For

- 4into1 enthusiasts

## Why This Product

- Trusted 4into1 brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Engine Armor in Foam:** 30 PPI open-cell polyurethane traps dust, dirt & mud before they reach your engine.
- • **Universal Compatibility:** Works seamlessly with a wide range of vehicles and vintage carburetors—one filter to rule them all.
- • **Value Without Compromise:** Premium quality at a fraction of the cost compared to other brands—protect your engine and your wallet.
- • **Tailor-Made Fit, Every Time:** Easily cut and shape the 12" x 24" foam sheet to fit any carburetor or air filter housing perfectly.
- • **Oil-Activated Sticky Barrier:** Specially designed filter oil enhances foam’s dirt-trapping power for superior protection.

## Overview

The Uni Filter BF-2 is a 12" x 24" x 3/8" black coarse foam air filter sheet with 30 pores per inch (PPI), designed for superior engine protection by trapping dirt, dust, and mud. Made from open-cell polyurethane foam and enhanced with specialized filter oil, it offers customizable fit for various carburetors and air filter housings. Manufactured in the USA, it delivers premium filtration performance at an exceptional value.

## Description

Uni filter ATV air filters keep out all the dirt, dust, and mud providing superior engine protection. The principle of how foam air filters work is simple, open cell polyurethane foam is wetted with specially developed filter oil. The sticky filter oil.

Review: I used this product as a replacement air filter on carburetor filters on a vintage car. I was able to cut strips and form inside the metal canisters for SU carburetors. I am confident this will be an excellent replacement.
Review: Did the job at a tenth of the price we were quoted by other companies.

## Features

- Foam in several densities for fabricating air filters.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000ONZT5Y |
| Assembly Required | No |
| Automotive Fit Type | Universal Fit |
| Brand | 4into1 |
| Colour | Multi-Colored |
| Country of Origin | USA |
| Customer Reviews | 4.6 4.6 out of 5 stars (390) |
| Date First Available | 10 November 2012 |
| Global Trade Identification Number | 00804451070342 |
| Item Weight | 72.6 g |
| Item model number | BF-2 |
| Manufacturer | Uni Filter |
| Manufacturer Part Number | BF-2 |
| Model | Bulk Coarse Foam Filter (30 PPI) - 12in. |
| Net Quantity | 1.0 Count |
| OEM Part Number | BF-2 |
| Product Dimensions | 61L x 30.5W x 1H Centimeters |
| UPC | 804451070342 |
| Volume | 132 Cubic Inches |

## Product Details

- **Brand:** 4into1
- **Fit Type:** Universal Fit
- **OEM Part Number:** BF-2
- **Product Dimensions:** 61L x 30.5W x 1H Centimeters
- **Product Grade:** Replacement Part

## Images

![Uni Filter BF-2 12" X 24" X 3/8" 30-PPI Black Coarse Foam - Image 1](https://m.media-amazon.com/images/I/51VcYZ4B6jL.jpg)
![Uni Filter BF-2 12" X 24" X 3/8" 30-PPI Black Coarse Foam - Image 2](https://m.media-amazon.com/images/I/91rLlymnrDL.jpg)

## Questions & Answers

**Q: Will sound pass through well? I'm looking for a replacement foam speaker cover (intercom). Currently it's 3/4" to 1" thick (could be less thick).**
A: read previous answer. Media will pass air for cooling circulation, and would pass sound as well. How well it would pass sound, I can't determine from my application.

**Q: is anyone using this as PC dust filters? saw same product on youtube and guy said it was not affecting air flow?**
A: Yes, on the air intake for a rack mounted power amp. It works well.

**Q: When you hold this 30 ppi filter up to the light, can you see through it? thank you.**
A: I can see specs of light through it, but I cannot see what is on the other side. It is opaque but lets specs of light through.

**Q: Would this work for my ventless whirlpool dryer bottom filter?**
A: That's a question to ask a Whirlpool dealer.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by A***R on 7 August 2020*

I used this product as a replacement air filter on carburetor filters on a vintage car. I was able to cut strips and form inside the metal canisters for SU carburetors. I am confident this will be an excellent replacement.

### ⭐⭐⭐⭐⭐ Review
*by P***E on 13 October 2020*

Did the job at a tenth of the price we were quoted by other companies.

### ⭐ Review
*by N***E on 1 November 2016*

FINALLY arrived thanks.

## Frequently Bought Together

- UNI Universal Filter Foam - 12" x 24" x 3/8" - Black
- Uni Filter - BF-1 BF1 12" X 16" X 5/8" 65-PPI Green Fine Foam
- UNI Filter Foam Filter Oil (1)

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---

*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-03-10*